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The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations. Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.

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Showing 34201 - 34220 of 35412 results
  • Recessed floating pier caps for highway bridges
    Recessed floating pier caps for highway bridges.
    Zuk, William
    1973-01-01 | PDF
    Presented are alternate designs for two existing bridges in Virginia - one with steel beams and the other with prestressed concrete beams - whereby the pier caps are recessed within the depth of the longitudinal beams. The purpose of this recession is to provide cleaner aesthetic lines for these bridges. At the same time, the recessed caps (transve ...
  • Stayinplace bridge deck forms a state of the art review Prestressed panel subdecks
    Stay-in-place bridge deck forms, a state of the art review. Prestressed panel subdecks.
    Hilton, Marvin H
    1973-01-01 | PDF
    The results of prior research conducted on precast prestressed panel subdecks for use in the construction of bridge decks are reviewed and summarized. This construction technique utilizes the precast panel subdecks as the forming for the cast-in-place upper portion of the deck. After placement of the upper portion of the deck the panels become an i ...
  • Particulate measurement and control devices for hot mix asphalt plants
    Particulate measurement and control devices for hot mix asphalt plants.
    Ritz, M. A
    1973-01-01 | PDF
    The emission of particulates is the main form of air pollution from hot mix asphalt plants. The measurement of these emissions in the ambient air may be used by the state and the plant personnel to monitor the quality of air in the area of a plant. Source sampling can be used to determine the amount of pollution created by a given source. If the am ...
  • A survey of future lowpolluting vehicle power plants and their implication for the gasoline tax
    A survey of future low-polluting vehicle power plants and their implication for the gasoline tax.
    Allen, Gary R
    1973-01-01 | PDF
    Because the standards set for auto emissions are being strictly enforced by the Environmental Protection Agency, it is imminent that the conventional internal combustion engine will not be the only vehicular power plant in widespread use. Both European and United States manufacturers are exploring numerous avenues in an effort to meet 1976 emission ...
  • The compilation and usage of condemnation proceedings data
    The compilation and usage of condemnation proceedings data.
    Allen, Gary R
    1973-01-01 | PDF
    1. Although there appear to be many factors which affect the magnitude of awards in right-of-way condemnations, the problem of testing for the significance of those factors is not insurmountable. This report provides an example of such testing. 2. There appears to be no significant relationship between the months delay from the date of original off ...
  • Results of reflective crack questionnaire survey
    Results of reflective crack questionnaire survey.
    Hughes, Charles S ;
    McGhee, Kenneth H
    1973-01-01 | PDF
    Department engineers were surveyed to obtain their opinions on the potential detrimental effects of transverse reflective cracks through the surface course of bituminous pavements and the costs of preventive measures. The majority of respondents (67%) stated that the cracks were only moderately detrimental, and 49% believed no additional cost for p ...
  • Responsibilities for maintaining the data system for pavement descriptive information
    Responsibilities for maintaining the data system for pavement descriptive information.
    Creech, Marion F ;
    Runkle, Stephen N
    1973-01-01 | PDF
    No Description
  • Methods for increasing the harshness of texture on old concrete pavements mechanical alteration with the Klarcrete machine
    Methods for increasing the harshness of texture on old concrete pavements : mechanical alteration with the Klarcrete machine.
    Creech, Marion F
    1973-01-01 | PDF
    Experiments were performed with the British Klarcrete machine-on the Emporia bypass (I-95) in Greensville County to determine if it was capable of removing the top layer of roadway to a depth of between 1/8 to 1/4 inch, and in so doing expose a fresh surface of highly fractured coarse aggregate to give a better skid resistance. In addition, experim ...
  • Characteristics and effectiveness of the Fairfax Virginia ASAP driver improvement schools
    Characteristics and effectiveness of the Fairfax, Virginia ASAP driver improvement schools.
    Stoke, Charles B
    1973-01-01 | PDF
    There are two driver improvement schools in simultaneous operation associated with the Fairfax, Virginia ASAP. One is conducted by the Northern Virginia Community College and the other by the Fairfax County Public Schools. The NVCC organized and developed a specialized alcohol curriculum prior to the establishment of the FCPS program. For this repo ...
  • Recidivism rates as a measure of the effectiveness of the rehabilitation and treatment countermeasure of the Fairfax Virginia ASAP 1972
    Recidivism rates as a measure of the effectiveness of the rehabilitation and treatment countermeasure of the Fairfax, Virginia, ASAP, 1972.
    Lynn, Cheryl
    1973-01-01 | PDF
    The rehabilitation countermeasure of the Fairfax, Virginia, ASAP is concerned primarily with four modes of treatment: (1) the Fairfax Driver Improvement Schools, (2) the Community Alcohol Center Clinic of the Division of Alcohol Services, (3) the Fairfax Mental Health Center, and (4) the Fairfax Alcoholism Continuing Evaluation. These programs are ...
  • Evaluating fatality trends in the Alcohol Safety Action Projects
    Evaluating fatality trends in the Alcohol Safety Action Projects.
    Roberts, John K
    1973-01-01 | PDF
    The report recommends that fatality trends in the ASAP areas should be compared only with fatality trends in control communities matched as nearly as possible on the basis of geographic and demographic characteristics, traffic crash rates, and traffic and population density.
  • Minimization of reflection cracks installation report 1973
    Minimization of reflection cracks : installation report, 1973.
    Hughes, Charles S
    1973-01-01 | PDF
    No Description
  • Blood alcohol test results of motor vehicle deaths as an evaluation method for the Fairfax Alcohol Safety Action Project
    Blood alcohol test results of motor vehicle deaths as an evaluation method for the Fairfax Alcohol Safety Action Project.
    Smith, Thomas J ;
    Roberts, John K
    1973-01-01 | PDF
    The Fairfax Alcohol Safety Action Project (ASAP) was started following the June 1971 approval of the proposal and working plan submitted to the Department of Transportation by the Highway Safety Division of Virginia. A total of $2,123,000 was allocated to the Safety Division. Of the five alcohol countermeasures that constitute the ASAP, one is admi ...
  • Indirect determination of particle shape of fine aggregate
    Indirect determination of particle shape of fine aggregate.
    Johnson, Larry A
    1973-01-01 | PDF
    Three methods developed by various agencies for measuring indirectly the particle shapes of fine aggregates were used along with a visual classification procedure to study aggregates from eight commercial sources along with a reference sand. The methods were (1) measurement of void content of individual size fractions as originally developed by the ...
  • A framework for a cost benefit analysis of the Fairfax County Virginia Alcohol Safety Action Project
    A framework for a cost benefit analysis of the Fairfax County, Virginia Alcohol Safety Action Project.
    Kimble, Bruce Anthony
    1973-01-01 | PDF
    Cost-benefit analysis is sometimes a useful tool for evaluating the advantages and disadvantages of alternative courses of action. The first half of this study was an attempt to further the use of such analysis in the evaluation of a highway safety project - the Fairfax Alcohol Safety Action Project (ASAP). This project is designed to reduce the fr ...
  • Public response to bridge colors
    Public response to bridge colors.
    Zuk, William
    1973-01-01 | PDF
    To determine people's reactions to bridges painted in colors as white, yellow, green, blue, red, brown, black, and aluminum, two test bridges were selected in Charlottesville, Virginia. One was painted a different color each month and the other was kept a single color for comparison. After each painting, interviews were held with three different gr ...
  • Physiological and psychological effects of noise on man a literature review
    Physiological and psychological effects of noise on man : a literature review.
    Easter, T. Glenn
    1973-01-01 | PDF
    This literature search was seen as part of an in-depth study of the physiological and psychological effects of noise on man, the ultimate objective being to establish criteria for highway design and location using the effects of the noise generated by the highway as one of the input factors.
  • Measures for preventing wrongway entries on highways
    Measures for preventing wrong-way entries on highways.
    Vaswani, Nari K
    1973-01-01 | PDF
    An evaluation of the results of a two-year survey of incidents of wrong-way driving on Virginia highways revealed that the majority of them originated at diamond type interchanges. On-site investigations of a number of the interchanges at which instances of wrong-way driving had been noted suggested several improvements. The report discusses measur ...
  • A design guide for subdivision pavements in Virginia
    A design guide for subdivision pavements in Virginia.
    Vaswani, Nari K
    1973-01-01 | PDF
    The design method for secondary roads and that for subdivision roads are based on AASHO Road Test Results and Virginia's design experience. For flexible pavements, the methods are divided into two parts: (1) the evaluation of the soil support value of the subgrade, the thickness equivalences of the paving materials, and the traffic in terms of vehi ...
  • Evaluation of several types of curing and protective materials for concrete interim report part III performance
    Evaluation of several types of curing and protective materials for concrete : interim report part III : performance.
    Newlon, Howard
    1973-01-01 | PDF
    Various curing and/or protective coatings were evaluated under three conditions: (1) accelerated laboratory freezing and thawing of specimens in 2 percent sodium chloride solution, (2) exposure in an outdoor area of slabs which were subjected to controlled application of deicers, and (3) exposure of some of the materials on three bridges. The perfo ...
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